"Mamma Mia" can refer to several works associated with the musical group ABBA:

The song "Eagle" is a cover that was originally performed by the Swedish group ABBA.

In popular music, the group ABBA became the essence of Swedish music during the 1970s and early 1980s.

She was one of the four members of Swedish group ABBA.

The Swedish group ABBA appeared twice in the first series, making their last ever TV appearance on the show.

Glenstudio, where the group ABBA recorded the album ABBA, is located here.

Coincidentally, the song was in the UK top 20 at the same time as another song called "Angeleyes" by the Swedish group ABBA.

The Swedish winning group ABBA, go on to be the top-selling act of the decade.

The Swedish group ABBA is an example of what inspired Wei Wei to become a pop singer and to learn English.

The song, in a very similar vein to pop group ABBA, also became a success and reached No.5 in May 1982.